Ricky Ricotta is probably the world’s only mouse to have a Mighty Robot for a best buddy. Usually, this is big fun. But right now, it’s big trouble! The evil Nimrod Night Crawler is sending his evil Night Crawlers to take over Earth. Ricky’s Mighty Robot might be able to stop them – but he’s trapped in a deep pit! That means it’s up to one brave little mouse to stop this nightmare from Neptune. Will Ricky be able to save the planet – and his robot friend?